Caller: “Vodafone” Scammer

Caller claimed they were from Vodafone and would like to offer me a 30% discount for being a loyal customer. They asked for my verification pin. I asked for their name and receipt number. They were unable to provide a receipt number but started giving me a call-back number. I hung up and called Vodafone through their official contact number who confirmed this was a scam call. Also reported to Scamwatch.

Jenny with a heavy accent said she was from vodaphone, asked for pin details for 30% discount.
I suggested she was naughty and should not be trying to scam people, asked how she slept at night and said I would call back, but why would I?